mirror of
https://github.com/Relintai/sdl2_frt.git
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99 lines
3.2 KiB
Objective-C
99 lines
3.2 KiB
Objective-C
/*
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Simple DirectMedia Layer
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Copyright (C) 1997-2014 Sam Lantinga <slouken@libsdl.org>
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This software is provided 'as-is', without any express or implied
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warranty. In no event will the authors be held liable for any damages
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arising from the use of this software.
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Permission is granted to anyone to use this software for any purpose,
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including commercial applications, and to alter it and redistribute it
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freely, subject to the following restrictions:
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1. The origin of this software must not be misrepresented; you must not
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claim that you wrote the original software. If you use this software
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in a product, an acknowledgment in the product documentation would be
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appreciated but is not required.
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2. Altered source versions must be plainly marked as such, and must not be
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misrepresented as being the original software.
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3. This notice may not be removed or altered from any source distribution.
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*/
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#include "../../SDL_internal.h"
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#ifndef SDL_POWER_DISABLED
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#if SDL_POWER_UIKIT
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#import <UIKit/UIKit.h>
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#include "SDL_power.h"
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#include "SDL_timer.h"
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#include "SDL_assert.h"
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#include "SDL_syspower.h"
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/* turn off the battery monitor if it's been more than X ms since last check. */
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static const int BATTERY_MONITORING_TIMEOUT = 3000;
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static Uint32 SDL_UIKitLastPowerInfoQuery = 0;
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void
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SDL_UIKit_UpdateBatteryMonitoring(void)
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{
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if (SDL_UIKitLastPowerInfoQuery) {
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if (SDL_TICKS_PASSED(SDL_GetTicks(), SDL_UIKitLastPowerInfoQuery + BATTERY_MONITORING_TIMEOUT)) {
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UIDevice *uidev = [UIDevice currentDevice];
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SDL_assert([uidev isBatteryMonitoringEnabled] == YES);
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[uidev setBatteryMonitoringEnabled:NO];
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SDL_UIKitLastPowerInfoQuery = 0;
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}
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}
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}
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SDL_bool
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SDL_GetPowerInfo_UIKit(SDL_PowerState * state, int *seconds, int *percent)
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{
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@autoreleasepool {
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UIDevice *uidev = [UIDevice currentDevice];
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if (!SDL_UIKitLastPowerInfoQuery) {
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SDL_assert(uidev.isBatteryMonitoringEnabled == NO);
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uidev.batteryMonitoringEnabled = YES;
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}
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/* UIKit_GL_SwapWindow() (etc) will check this and disable the battery
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* monitoring if the app hasn't queried it in the last X seconds.
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* Apparently monitoring the battery burns battery life. :)
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* Apple's docs say not to monitor the battery unless you need it.
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*/
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SDL_UIKitLastPowerInfoQuery = SDL_GetTicks();
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*seconds = -1; /* no API to estimate this in UIKit. */
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switch (uidev.batteryState) {
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case UIDeviceBatteryStateCharging:
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*state = SDL_POWERSTATE_CHARGING;
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break;
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case UIDeviceBatteryStateFull:
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*state = SDL_POWERSTATE_CHARGED;
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break;
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case UIDeviceBatteryStateUnplugged:
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*state = SDL_POWERSTATE_ON_BATTERY;
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break;
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case UIDeviceBatteryStateUnknown:
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default:
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*state = SDL_POWERSTATE_UNKNOWN;
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break;
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}
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const float level = uidev.batteryLevel;
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*percent = ( (level < 0.0f) ? -1 : ((int) ((level * 100) + 0.5f)) );
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return SDL_TRUE; /* always the definitive answer on iOS. */
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}
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}
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#endif /* SDL_POWER_UIKIT */
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#endif /* SDL_POWER_DISABLED */
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/* vi: set ts=4 sw=4 expandtab: */
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